Tube or flue cutter.



A. H. KELCH.

TUBE 0R FLUE CUTTERL APPLICATION FILED FEB. 64 1915.

1,1550%. Patented Nov. 2, 1915.

1 I s- E I 1 l i i l 1 I 1 l COLUMBLA PLANOORAPH co.,\vAuuN0'mN, n. c.

TlhlTT ALFRED H. KELOH, OF LAKE VIEV, IOWA.

TUBE OR FLUE CUTTER.

Application filed February 6, 1915.

To all whom it may concern.

Be it known that I, ALFRED H. KELCII, a citizen of the United States,residing at Lake View, in the county of Sac and State of Towa, haveinvented a new and useful Tube or Flue Cutter; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to an improved tool for cutting the ends of finesor tubes of a stationary or locomotive boiler, upon the inside of theflue sheet, which tool comprises improved features as claimed.

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings :Figure 1 is a view showing the flue cutter in theposition in connection with one end of the tube or flue, showing thehandle thrown at right angles in dotted lines, whereby the tool may berotated partially, for instance only the width of the cutter, that is,after making an incision with the cutter. Fig. 2 is a sectional view online 22 of Fig. 1. Fig. 3 is a sectional view on line 3-3 of Fig. 1.Fig. 4.- is

a view, showing a portion of the tool head, the U-shaped clamp and thecutter proper,

illustrating said parts disassembled.

Referring more especially to the drawings, 1 designates the tool headhaving a disk-shaped portion 2 at one end, the peripheral portion ofwhich is provided with notches 3. A handle member 4 is provided, whichcomprises the two sections 5 and 6, the section 6 is threaded at 7 intoa hollow portion of the section 5, while the outer portion or end of thesection 5 may be grasped by the hand of an operator for operating thedevice.

The section 6 is provided with a bifurcation 8, the side arms 9 of whichengage opposite flat faces of the disk-shaped portion 2 of the head 1,there being a suitable pivot pin 10 for pivotally connecting said parts.The side arms 9 of the section 6 are provided with elongated slots 11,to receive the U-shaped block or dog 12, the portion 13 of which isdesigned to engage any one of the notches 3 of the disk 2 to hold thehandle member in. adjusted position, whereas the arms let of the blockor dog engage upon the outer surfaces of the arms 9 to preventtransverse displacement of the dog. A

Specification of Letters Patent.

Patented Nov. 2, 1915.

Serial No. 6,498.

spring 15 is interposed between the dog 12 and the crotch of saidbifurcation, to hold the dog in any one of said notches.

The head 1 is constructed with a pair of an ular recesses or cutawayportions 17 and 18. The angular recess 17 has its shoulder 19 engagingthe peripheral flange 20 of the end of the flue, while at the same timethe curved portion 21 of the tool head engages the end of the flue asshown in Fig. 1, thereby guiding the tool in its work.

In using the device the interior periphery of the tube or flue adjacentto the peripheral flange 20 is supplied with heavy grease, therebyallowing the curved portion 21 of the head to slide into the flue ortube when the handle is depressed, in order to force the cutting edge ofthe cutting tool proper through the wall of the fine or tube. After thecutting edge of the cutter'proper has been forced through the wall ofthe tube, the handle is swung to such a position, that the device may berotated just the width of the cutter, then the handle is swung in theposition shown in full lines, after which downward pressure upon thehandle is exerted, to again force the cutting edge through the wall.

The opposite faces of the tool head 1 are constructed with recesses 22which receive the opposite sides 23 of the U-shaped flange, there beinga headed screw threaded pin 24 to hold the clamp in position. This pin24: passes through the sides of the U-shaped clamp and through the toolhead. 1, and is threaded in one of the sides of the U-shaped clamp, asshown clearly in Fig. 2, Before placing the U-shaped clamp in positionas illustrated in Figs. 1 and 2, the cutting tool proper is arranged inthe recess 18, there being a set screw 26 threaded through the end ofthe U-shaped clamp and designed to frictionally engage the cutting tool25 proper. The cutting tool proper 25 has a V-shaped upper portionprovided with a cutting edge 27, which, when the device is arranged asshown in Fig. 1, engages the inner circumference of the flue adjacentthe flue sheet.

After the device has been arranged as shown in Fig. 1 downward pressureis manually exerted upon the handle 4, thereby forcing the curvedportion 21 of the head into the tube, said curved portion thereby slidesupon the interior periphery of the tube adjacent the flange 20. Aspressure is severed. that before making these consecutive cuts edge ofthe tool25.

imparted to the device.

applied downwardly on the handle 4 the cutting edge of the tool 25 isforced through the wall of the flue or tube. Consecutively after eachtime the cutting edge of the tool is forced through the wall of thetube, the device is manipulated to withdraw the tool 25 from the cut,the handle at being then arranged in such a position as to rotate thedevice partially, say for instance, the width of the cutting toolimmediately adjacent to the'previous cut, then the handle is returned'to the position shown in full lines,- and downward pressure appliedthereon, thereby causin the cuttin ed 'e to make another b 23 incision.These operations are consecutively repeated, until the flue or tube isentirely However, it is to be understood,

is claimed as new and useful is 1. In combination with a flue cutterhead having a pair of angular cutaway portions, a shoulder of one ofwhich is designed to engage the inner end 7. surface of the flue, whilethe portion of the head opposite said shoulder engages the oppositeinner surface of the fine end, a'V-shaped cutting tool proper engagingthe other angular cutaway portion having its cutting edge engaging theinner surface of the flue, a U-shaped clamp having means to hold thecutter proper in the angular cutaway portion, means for holding theU-shaped clamp in place, and a handle having such connections with thehead that the handle may be thrown at different angles to the head.

2. In combination with a flue cutter head having a pair of angularcutaway portions, a shoulder of one of which is designed to engage theinner end surface of the flue, while the portion of the head oppositesaid shoulder engages the opposite inner surface of the flue end, a\i-shaped cutting tool proper engaging the other angular cutawayportion, having its cutting edge engaging the inner surface of the flue,the opposite side faces of the head having diametrically oppositerecesses, a U-shaped clamp arching the head and engaging the diametric:lly opposite recesses for holding the cutter proper in place, a setscrew engaging through the end of the U-shaped clamp to hold the cuttertool proper in place, means passing through the sides of the clamp andthe head for holding the same in place, and a handle having suchconnections with the head. that the handle may be thrown substantiallyat right angles to the head.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALFRED H. KELCH. lVitnesses C. P. THERKELSEN, O. S. HOLADAY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, .D. C.

